Computer keyboard



FIG. 1 is a left side rear perspective view of our design for a computer keyboard.

FIG. 2 is a right side rear perspective view thereof.

FIG. 3 is a front elevation thereof.

FIG. 4 is a rear elevation thereof.

FIG. 5 is a left side view thereof.

FIG. 6 is a right side view thereof; and,

FIG. 7 is a top view thereof.

The bottom of the keyboard forms no part of the claimed design. The details shown in broken lines are intended to indicate structure shown for illustrative purposes only, and form no part of the claimed design. 

The ornamental design for a computer keyboard, as shown and described. 